Journal of Electroanalytical Chemistry最新文献_第5页

Modificationally doped Se element and in-situ doped V element to elevate the supercapacitor performance of Co-MOF 改性掺杂Se元素和原位掺杂V元素，提高Co-MOF的超级电容器性能

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-07-18 DOI: 10.1016/j.jelechem.2023.117674

Guiquan Liu, Shiyu Li, Rumisa Baikeri, Guorong Wang, Zhiliang Jin

{"title":"Modificationally doped Se element and in-situ doped V element to elevate the supercapacitor performance of Co-MOF","authors":"Guiquan Liu, Shiyu Li, Rumisa Baikeri, Guorong Wang, Zhiliang Jin","doi":"10.1016/j.jelechem.2023.117674","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117674","url":null,"abstract":"<div>Metal-organic skeleton (MOF) with adjustable pore skeleton and finely reaction sites has been widely accepted in the application of high-performance supercapacitors. Here, the Se-Co-MOF-1 nano-particles obtained by modified doped Se element to Co-MOF and the CoV3-MOF nano-sheets obtained by in-situ doped V element in Co-MOF. As a result, Se-Co-MOF-1 and CoV3-MOF electrode materials have more electrochemical reactivity, better conductivity and better stability. At a certain current density, Se-Co-MOF-1 and CoV3-MOF electrode materials have better mass-specific capacitance and better rate performance than Co-MOF. Furthermore, the Se-Co-MOF-1//AC ASC and CoV3-MOF//AC ASC are also assembled, which show relatively excellent power density and energy density compared to similar work reported. The Se-Co-MOF-1//AC ASC and CoV3-MOF//AC ASC after 10,000 cycles, their mass-specific capacitance retention rate are still 70.00 %, which further shows the reliable stability of Se-Co-MOF-1 and CoV3-MOF electrode materials. This result proves that the synthetic schemes of MOF nano-sheets/nano-particles can be selected as the source of the strategy for preparing excellent electrode materials.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117674"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3404755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A flame retardant and flexible gel polymer electrolytes for high temperature lithium metal batteries 一种用于高温锂金属电池的阻燃柔性凝胶聚合物电解质

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-08-07 DOI: 10.1016/j.jelechem.2023.117712

Qinting Su , Songde Huang , Jinlong Liao, Dakun Song, Wenjie Yuan, Cuihua Li, Jinhua He

{"title":"A flame retardant and flexible gel polymer electrolytes for high temperature lithium metal batteries","authors":"Qinting Su , Songde Huang , Jinlong Liao, Dakun Song, Wenjie Yuan, Cuihua Li, Jinhua He","doi":"10.1016/j.jelechem.2023.117712","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117712","url":null,"abstract":"<div>In recent years, rechargeable lithium-ion batteries (LIBs) have been extensively studied and applied in portable electronics, electric vehicles, and new energy storage devices. Gel polymer electrolytes (GPEs), currently a research hotspot, inherit the high ionic conductivity of liquid electrolytes and great mechanical properties and safety of solid electrolytes, exhibiting great application potential. Herein, we demonstrate a flexible flame retardant GPE (PPC37) that forms a polymer network through intermolecular hydrogen bonding. During the charge–discharge cycle, the formation of a LiF-rich solid electrolyte interface (SEI) facilitates the uniform electrochemical deposition of Li+ and achieves a long life cycle without dendrites. PPC37 possesses high ionic conductivity (1.06 mS cm−1 at 25 °C) and robust mechanical properties (198% fracture length and 2.43 MPa fracture strength). The Li|PPC37|LiFePO4 batteries presented great cycling stability with an initial capacity of 151.9 mAh/g and a discharge capacity retention of 86.4% after 500 cycles at a high current density of 3C at 55 °C. The excellent thermal stability, interfacial stability, flame retardancy, flexibility and electrochemical stability demonstrated with PPC37 demonstrate the safety of high-temperature batteries, indicating their great application potential in flexible electronic devices and high-temperature environments.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117712"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3276172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxygen-vacancy-decorated ZnO/NiO@N-doped carbon core-shell microspheres with high electrochemical performance for supercapacitor applications 具有高电化学性能的氧空位修饰ZnO/NiO@N-doped碳核壳微球在超级电容器中的应用

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-07-13 DOI: 10.1016/j.jelechem.2023.117661

Jiaqi Zhang , Jin Li

{"title":"Oxygen-vacancy-decorated ZnO/NiO@N-doped carbon core-shell microspheres with high electrochemical performance for supercapacitor applications","authors":"Jiaqi Zhang , Jin Li","doi":"10.1016/j.jelechem.2023.117661","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117661","url":null,"abstract":"<div>In this study, ZnO/NiO@NC was prepared using polyvinylpyrrolidone (PVP) as a structural guide and carbon source, and an oxygen-vacancy-rich ZnO/NiO@N-doped carbon shell (ZnO/NiO@NC) electrode material was obtained by annealing under an N2 atmosphere. When the current density of the galvanostatic charge–discharge (GCD) was set to 0.5 A/g, the ZnO/NiO@NC electrode exhibited maximum specific capacitance (860.00 F/g), longer charge/discharge time, and a lower impedance compared with other materials. Its specific capacity was maintained above 80%, indicating that the active material had superior stability owing to encapsulation by the carbon shell. The excellent electrochemical performance is attributed to the formation of an effective p-n heterostructure between ZnO and NiO as the basic skeleton, surface oxygen vacancies, and the rich mesoporous structure after high-temperature reduction calcination. Furthermore, the excellent electrical conductivity of the N-doped carbon shell further improves the electrochemical performance of the material.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117661"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3461048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

3D hollow spheres comprising MXene/g-C3N4 heterostructre for efficient polysulfide adsorption and conversion in high-performance Li-S batteries 含MXene/g-C3N4异质结构的三维空心球在高性能Li-S电池中高效吸附和转化多硫化物

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-06-24 DOI: 10.1016/j.jelechem.2023.117629

Ekhlas Abd-Alkuder Salman , Khalida Abaid Samawi , Maadh Fawzi Nassar , G. Abdulkareem-Alsultan , Emilia Abdulmalek

{"title":"3D hollow spheres comprising MXene/g-C3N4 heterostructre for efficient polysulfide adsorption and conversion in high-performance Li-S batteries","authors":"Ekhlas Abd-Alkuder Salman , Khalida Abaid Samawi , Maadh Fawzi Nassar , G. Abdulkareem-Alsultan , Emilia Abdulmalek","doi":"10.1016/j.jelechem.2023.117629","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117629","url":null,"abstract":"<div>Suppressing the lithium polysulfides (LiPSs) shuttle and facilitating ion and charge transport in the electrode component resulting in effective sulfur conversion, is essential for the efficient functioning of lithium-sulfur (Li-S) batteries have substantial sulfur loading. In this study, a multifunctional cathode material based on a three-dimensional MXene and g-C3N4 hollow spheres framework was designed. This design aimed to create a conductive Platform with high absorptive and catalytic capability that would boost the performance of Li-S batteries in practical operating conditions. At the electrode level, the 3D hollow spherical architecture offers a large surface area to achieve high sulfur loading, preserves structure integrity in the electrode over significant volume changes of sulfur species, and facilitates diffusion of Li+ and electrolyte flow. At the molecular level, the pyridinic structure of g-C3N4 and the MXene conductive platform allows for fast sulfur conversion. The cathode, consisting sulfur ratio of 80%, exhibits a remarkable primary specific capacity of 1350.6 mAhg−1 at 0.1C. It retains 877.2 mAhg−1 after 100 cycles, showing a 65.2% retention rate. Furthermore, it exhibits exceptional electrochemical properties in terms of rate performance, giving a capacity of 632.5 mAhg−1 at a current of 4C. Our findings may have future technological consequences since they may speed the development of cost-effective and more efficient electrode materials for Li-S batteries.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117629"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3461050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Electrochemical properties of cyclen and cyclam macrocycles bearing ferrocenyl pendants and their transition metal complexes 含二茂铁吊坠的cyclen和cyclam大环及其过渡金属配合物的电化学性质

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-07-28 DOI: 10.1016/j.jelechem.2023.117687

Angel A.J. Torriero , Zhanghua Zeng , Ashwin K.V. Mruthunjaya , Alan M. Bond

{"title":"Electrochemical properties of cyclen and cyclam macrocycles bearing ferrocenyl pendants and their transition metal complexes","authors":"Angel A.J. Torriero , Zhanghua Zeng , Ashwin K.V. Mruthunjaya , Alan M. Bond","doi":"10.1016/j.jelechem.2023.117687","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117687","url":null,"abstract":"<div>The ligands [R-Fc(cyclen)], [Fc(cyclen)2], [Fc(cyclam)2], [Fc2(cyclen)] and [Fc4(cyclen)] (R = –H or –CH2OH; Fc = ferrocene; cyclen = 1,4,7,10-tetraazacyclododecane; cyclam = 1,4,8,11-tetraazacyclotetradecane) and their respective Cu2+, Co2+, Cd2+, Zn2+, and Ni2+ metal complexes have been synthesised and electrochemically characterised. The voltammetry of the free ligands in a CH2Cl2/CH3CN (1:4) solvent mixture containing [Bu4N][PF6] or [Bu4N](B(C6F5)4] as the supporting electrolyte yields two closely spaced oxidation processes. The first one is Fc based, and the other is related to the interaction of the Fc with the nitrogen component. Details of the mechanism were established by studying the oxidation of N,N-dimethylaminomethylferrocene by cyclic voltammetry and bulk electrolysis with product isolation. However, cyclic voltammetries exhibit a single Fc-based reversible oxidation process when the ligands form metal complexes with Cu2+, Co2+, Cd2+, Zn2+, or Ni2+. Upon metal ion binding, an important positive shift in the reversible midpoint potential, Em, is observed. The magnitude of the shift in the Em values follows the order [Fc(cyclen)2] ≈ [Fc(cyclam)2] ≫ [R-Fc(cyclen)] ≈ [Fc2(cyclen)] > [Fc4(cyclen)]. The ability of the ligands to work as electrochemical sensors for the mentioned cations is discussed.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117687"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2823513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Suppressing-accelerating effect of Nitrotetrazolium Blue chloride in boosting superconformal cobalt filling 硝基四氮唑蓝对超共形钴填充的抑制-加速作用

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-07-26 DOI: 10.1016/j.jelechem.2023.117671

Yaqiang Li , Xiaochuan Ma , Ruopeng Li , Jinqiu Zhang , Peixia Yang , Anmin Liu , Bo Wang , Peter Broekmann , Maozhong An

{"title":"Suppressing-accelerating effect of Nitrotetrazolium Blue chloride in boosting superconformal cobalt filling","authors":"Yaqiang Li , Xiaochuan Ma , Ruopeng Li , Jinqiu Zhang , Peixia Yang , Anmin Liu , Bo Wang , Peter Broekmann , Maozhong An","doi":"10.1016/j.jelechem.2023.117671","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117671","url":null,"abstract":"<div>Achieving cobalt superconformal (bottom-up) growth is significantly important. Electrochemical methods, including cyclic voltammetry, electrochemical impedance spectra and EQCM-derived Coulomb-voltage curves, were used to confirm the suppressing influence of new suppressor Nitrotetrazolium Blue chloride (NBT). In situ Raman spectroscopy was used confirm that NBT can effectively adsorb on cobalt surface. Besides, EQCM-derived Coulomb-voltage illustrates that it is more beneficial for cobalt electrodeposition at high pH. The NBT effect on hydrogen evolution reaction (HER) was studied by LSV and chronoamperometry. Finite element simulation is used to investigate the accelerating effect of NBT on HER and convection. Suppressing-accelerating effect is proposed to illustrate effect of NBT. NBT can not only suppress the cobalt deposition but also can accelerate local convection by intensifying HER, which can in turn strengthen NBT adsorption. SEM analysis demonstrates that convection and NBT can refine grain. High-quality cobalt is achieved with low SDT values ranging from 24 μm to 45 μm and high FP values (75.4 % for 150 μm, 88.9 % for 100 μm and 87.2 % for 50 μm).</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117671"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3461052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of F- on the electrochemical properties and electrodeposition nucleation mechanism of Ce(III) in LiCl-KCl melts F-对LiCl-KCl熔体中Ce(III)电化学性能及电沉积成核机理的影响

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-07-20 DOI: 10.1016/j.jelechem.2023.117677

Xiaorui Xu , Tianxing Shi , Yuncong Ding , Xinyu Zhang , Jia Song , Hong Zhang , Yafei Wang , Wentao Zhou , Shaoqiang Guo

{"title":"Effects of F- on the electrochemical properties and electrodeposition nucleation mechanism of Ce(III) in LiCl-KCl melts","authors":"Xiaorui Xu , Tianxing Shi , Yuncong Ding , Xinyu Zhang , Jia Song , Hong Zhang , Yafei Wang , Wentao Zhou , Shaoqiang Guo","doi":"10.1016/j.jelechem.2023.117677","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117677","url":null,"abstract":"<div>The purpose of this work is to systematically investigate the effect of F− on the electrochemical properties and electrodeposition nucleation of Ce(III) in LiCl-KCl molten salt. Electrochemically reversible, three-electron transfer and diffusion-controlled Ce(III)/Ce redox reactions were still observed by using Cyclic voltammetry (CV), Square wave voltammetry (SWV), and Chronopotentiometry (CP) methods in the LiCl-KCl molten salt containing F−. With the addition of F−, a negative shift in peak and equilibrium potentials were observed, indicating that F− could interact with Ce(III) via the coordination competition with Cl−. Also, F− ions were found to decrease both the diffusion coefficient and exchange current density j0 of Ce(III). In addition, the thermodynamic data of Ce(III)/Ce at multiple F− concentrations were calculated theoretically, which showed that Ce(III) preferred to form [CeCl5F]3−complexes in chlorine molten salts. Finally, the effect of F− on the electrodeposition nucleation mechanism of Ce(III) at tungsten electrodes was studied. The results showed that the nucleation and growth mechanism shifted from instantaneous nucleation to between instantaneous and progressive nucleation with the addition of F−. The current research paves a new way for changing the nucleation mode of electrodeposition, which provides a new direction to retrieve the uranium dendrites during the electrorefining of spent nuclear fuel.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117677"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1524239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistically enhanced electrochemical performance using N-rich multilayered carbon nanofibers 富氮多层碳纳米纤维协同增强电化学性能

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-08-05 DOI: 10.1016/j.jelechem.2023.117707

Dongil Kim , Hee-Jo Lee , Bo-Hye Kim

{"title":"Synergistically enhanced electrochemical performance using N-rich multilayered carbon nanofibers","authors":"Dongil Kim , Hee-Jo Lee , Bo-Hye Kim","doi":"10.1016/j.jelechem.2023.117707","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117707","url":null,"abstract":"<div>N-rich multilayered carbon nanofibers with hollow channels (PPMPN) are fabricated to fully utilize the mesopores, micropores, and nitrogen-functional groups of carbon nanofibers (CNFs) for superior electrochemical properties. Among all composites, the PPMPN(10) exhibits high specific surface area (570 m2g−1) with mesopore volume fraction (42%) and rich surface functionalities (∼7.25at% nitrogen and ∼ 16.1at% oxygen), helping to improveelectrochemical performance. The performance of the symmetric supercapacitor of the PPMPN was significantly improved in terms of its specific capacitance of 189 Fg−1 at 1 mAcm−2, good retention of 80% (when the current density is increased from 1 to 20 mAcm−2), energy density of 23.5 Whkg−1 at a power density of 400 Wkg−1, and cycling stability of 94% for 10,000 cycles. The top layer plays a role in charge storage/transport by increasing electrical conductivity due to N-functional groups. The intermediate layer with tubular 1D nanostructures enhances the diffusion of electrolyte ions even at higher current densities. The bottom layer composed of numerous micropores serves as a charge storage layer. Therefore, in the multilayer CNF, the micropores/mesopores and N-functional properties of each layer do not interfere with each other, and the advantages of the factors of each layer are maximized in the electrochemical properties.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117707"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2249235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of CuInS2 thin film photocathode with variation of sulfurization sources and Pt-In2S3 modification for photoelectrochemical water splitting 不同硫化源CuInS2薄膜光电阴极的合成及Pt-In2S3改性的光电分解水

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-07-26 DOI: 10.1016/j.jelechem.2023.117683

Gunawan , Roni Adi Wijaya , Ahmad Suseno , Retno A. Lusiana , Wilman Septina , Takashi Harada

{"title":"Synthesis of CuInS2 thin film photocathode with variation of sulfurization sources and Pt-In2S3 modification for photoelectrochemical water splitting","authors":"Gunawan , Roni Adi Wijaya , Ahmad Suseno , Retno A. Lusiana , Wilman Septina , Takashi Harada","doi":"10.1016/j.jelechem.2023.117683","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117683","url":null,"abstract":"<div>CuInS2 thin films have been successfully synthesized from the electrodeposition of copper (Cu), indium (In), and sulfurization on a molybdenum glass substrate as a water splitting photocathode. The effect of various sources of sulfurization with thiourea, sulphur, and H2S and modification with Pt-In2S3 on the character and performance of the material was observed. The success of the synthesis was confirmed by the typical peaks of 28.2, 46.8, and 55.4° on XRD, the presence of Cu, In, S elements on SEM-EDX analysis, the appearance of peaks of 298 cm−1 on Raman analysis, and the detection peaks of Cu 2p, In 3d, and S 2p with XPS analysis. Meanwhile, performance effectiveness and photoelectrochemical properties were analysed with photocurrent linear sweep voltammetry (LSV), applied bias photon-to-current efficiency (ABPE), and incident photon-to-current conversion efficiency (IPCE). Variations of sulfurization sources give different character and photocurrent results due to differences in the existing reaction mechanisms. While the modification treatment with Pt-In2S3 increased the resulting photocurrent. Sulfurization with H2S and modification of Pt-In2S3 gave the best results with a photocurrent of 18 mA cm−2, an efficiency of 3% ABPE, 47.2% IPCE, was evolved 467 μmol H2 and 230,1 μmol O2. This shows good potential as a water splitting material to produce environmentally friendly hydrogen fuel.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117683"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3461046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Facile cubic Nd doped MnO nanostructure synthesis as effective electrocatalyst for oxygen evolution reaction 易立方Nd掺杂MnO纳米结构作为析氧反应的有效电催化剂的合成

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-09-15 Epub Date: 2023-08-06 DOI: 10.1016/j.jelechem.2023.117705

Mehar Un Nisa , Karam Jabbour , Sumaira Manzoor , Khaled Fahmi Fawy , Abdul Ghafoor Abid , Fayyaz Hussain , Shaimaa A.M. Abdelmohsen , Meznah M. Alanazi , Muhammad Naeem Ashiq

{"title":"Facile cubic Nd doped MnO nanostructure synthesis as effective electrocatalyst for oxygen evolution reaction","authors":"Mehar Un Nisa , Karam Jabbour , Sumaira Manzoor , Khaled Fahmi Fawy , Abdul Ghafoor Abid , Fayyaz Hussain , Shaimaa A.M. Abdelmohsen , Meznah M. Alanazi , Muhammad Naeem Ashiq","doi":"10.1016/j.jelechem.2023.117705","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117705","url":null,"abstract":"<div>Development of an effective electrocatalyst for the electrochemical water splitting to store electrical energy as H2 fuel and improve sluggish oxygen evolution reaction (OER) is the need of the time. For H2 production and making it more accessible, developing a low-cost fabrication method for an efficient OER catalyst with characteristics including a large surface area, an abundance of active sites, and exceptional stability is necessary. In this study, neodymium-doped manganese oxide (Nd-MnO) with a larger specific surface area (32.6 m2/g), small size particles (84 nm), and most crucially high concentration of oxygen vacancies fabricated via a simple solution reduction method using NaBH4 as a reductant. Nd-MnO has an overpotential of 394 mV and a Tafel slope value of 84 mV/dec reaching 10 mA/cm2, superior to RuO2 and MnO. The potential results of the Nd-MnO are due to a unique structure consisting of nanocubes that may enhance OH ion mass diffusion/transport and offer a large number of active sites for catalysis of OER, as well as oxygen vacancies which are also validated by DFT that may enhance the electronic conductivity and provide H2O adsorption on the surface of neighboring Mn3+ sites.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"945 ","pages":"Article 117705"},"PeriodicalIF":4.5,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3461054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0